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On-Demand Water Heater
Installation Manual and Owner's Guide
Gas Tankless Water Heater
Suitable for potable water heating and space-heating*
* Please refer to local codes for space-heating compliance.
FEATURING
• ENDLESS HOT WATER
• ON-DEMAND USAGE
• COMPACT, SPACE SAVING
• ENERGY CONSERVATION
• COMPUTERIZED SAFETY
• NO PILOT LIGHT
• EASY-LINK SYSTEM*
• COMMERCIAL GRADE COPPER*
*(T-D2-IN / 510 model only)
ANSI Z21. 10.3 and CSA 4.3
T-D2-IN / 510
model only
TM
Models
T-KJr2-IN / 110
T-K4-IN / 310
T-D2-IN / 510
If the information in these
instructions is not followed
exactly, a fire or explosion may
result causing property damage,
WARNING
personal injury or death.
- Do not store or use gasoline or other
flammable vapors and liquids in the vicinity
of this or any other appliance.
- WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electric switch, do not
use any phone in your building.
• Immediately call your gas supplier from
a neighbor's phone. Follow the gas
supplier's instructions.
• If you cannot reach your gas supplier, call
the fire department.
- Installation and service must be performed by
a qualified installer, service agency or the gas
supplier.
If you have any questions,
please call 1-888-479-8324
65Q012-6
REV. 06(04-15)
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Table of Contents
Related Manuals for Takagi T-D2-IN / 510
Summarization of Contents
SAFETY GUIDELINES
Safety Definitions
Explains DANGER, WARNING, and CAUTION symbols used in the manual.
General
Outlines general safety precautions and installation guidelines.
INSTALLATION
General
Covers fundamental installation requirements and considerations.
Clearances
Specifies required distances around the water heater for safe operation.
Included Accessories
Lists items provided with the water heater for installation and use.
Optional Items
Details accessories available for purchase to enhance functionality.
Venting Instructions
General
Provides fundamental rules and recommendations for venting the appliance.
Exhaust venting
Details requirements for Category III appliances and vent system materials.
Vent Termination Clearances
Specifies required distances for vent terminals from building openings and grade.
Gas supply and gas pipe sizing
General
Covers gas type verification, regulator operation, and conversion warnings.
Measuring Inlet Gas Pressure
Outlines the procedure for checking gas pressure, requiring a licensed professional.
Gas Connections
Details installing shutoff valves, performing leak tests, and purging lines.
Easy-Link System
General
Explains the system's capabilities for manifolding multiple units.
Easy-Link Connection Procedures
Provides step-by-step instructions for connecting units in the Easy-Link System.
APPLICATIONS
Space-Heating Applications
Discusses requirements for using the heater in space heating systems.
OPERATING SAFETY
OPERATING INSTRUCTIONS
Step-by-step guide for safely starting and operating the water heater.
TO TURN OFF GAS TO APPLIANCE
Instructions for safely shutting down the gas supply to the appliance.
NORMAL OPERATION
General
Explains basic operation, including activation flow rates and tap usage.
Temperature Settings
Details how to adjust water temperature using DIP switches or remote controller.
Without Remote Controller
Details how to select temperatures using DIP switches on the computer board.
Maintenance and Service
Unit Draining and Filter Cleaning
Provides procedures for draining the unit and cleaning the cold water inlet filter.
TROUBLESHOOTING
General
Lists common problems and their solutions related to water temperature and flow.
EASY-LINK SYSTEM
Remote controller: TM-RE30/ TK-RE02
Addresses issues with remote controller display and operation.
How are the unit numbers assigned?
Explains the process of assigning and checking unit numbers in the system.
Error Codes
Easy-Link System
Describes how error codes are displayed differently in an Easy-Link System.
Single Unit Installations
Explains how error codes are displayed for individual unit installations.
COMPONENTS DIAGRAM
Case assembly
Illustrates the main external components and assembly of the unit's casing.
Temperature remote controller
Shows the components of the remote controllers for different models.
Water way assembly
Water outlet section
Details the components of the water outlet assembly.
Water inlet section
Details the components of the water inlet assembly.
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